Adsense asynchronous vs. synchronous - What do you use?

Google has had the asynchronous ad type in Adsense for a few months now, recently that has became the "default" when selecting ads. Which do you use on your site? asyc or javascript method that uses synchronous loading?

 

I've switched to the newer asynchronous ones as Google is now ranking sites by page load speed as a major factor, and with 3 ad blocks running I found (Particularly on WP) that when I did page speed tests adsense was one of the biggest culprits. Okay the ads tend to load last but I'd rather that than have my SEO penalised due to slow loading. Hope that makes sense. I think a lot of people will read your thread (Which is one I'd been meaning to start for ages) and think "What the hell are asynchronous ads?"
Good thread to start

 

Thanks for your response. Glad we both prefer faster page load speeds also the revenue does not seem lower like some people say.

 

I'm currently at this stage

Could you elaborate on the differences and how to change it?

 

From Google:

Basically loads your webpages faster than waiting for the javascript to load with synchronous ad code.

 

Thanks, I must be on async then as my ads are the last thing to load.

 

If the revenue isn't lower, are there any benefits at all in using synchronous?